Question 1

Our Bearsden house has a family bathroom and an en suite, will a combi cope?

Accepted Answer

It depends on how you use them and on the water main. If two people regularly shower at the same time, a combi will usually disappoint, because it shares one fixed amount of heat between both showers. If showers are taken one after another and the mains flow is strong, a good combi can work well. We measure the flow at the survey and tell you which side of that line your house sits on. Call 07988 591331.

Question 2

How much does a new boiler cost in Glasgow?

Accepted Answer

It depends on the boiler, the property and whether the system needs reworking around it. We survey first and give you a fixed written quote rather than a phone estimate that changes later. A straight combi swap sits at the lower end, a back boiler removal or a system conversion at the higher end.

Question 3

How long does a boiler replacement actually take?

Accepted Answer

A straightforward combi swap is usually one day, heating back on that same evening. Moving the boiler to a different wall, converting from a system to a combi, or taking out a back boiler typically runs to two days.

Question 4

Will you size the new boiler properly or just match the old one?

Accepted Answer

We size it to the property's actual heat loss, room count, window area, insulation, hot water demand. A lot of Glasgow homes have oversized boilers fitted years ago on a like-for-like basis, which short-cycles and wastes gas. Matching what's there is the lazy option, not the correct one.

Question 5

Can I move the boiler somewhere else during the replacement?

Accepted Answer

Usually yes, and it's the right moment to do it since the pipework's already open. Common moves are out of a bedroom cupboard into a kitchen or utility. It adds pipework and flue routing to the job, so it changes the quote, we'll price both options so you can compare.

Question 6

Do I need a combi, a system or a regular boiler?

Accepted Answer

Broadly, a combi suits most flats and smaller homes with one bathroom, since there's no tank taking up space. A system boiler with a cylinder makes more sense where two bathrooms might run at once, or where mains pressure is poor. We'll tell you which fits your property rather than which is easiest to fit.

Question 7

What guarantee comes with a new boiler?

Accepted Answer

Up to 12 years on the boiler itself depending on the make and model, plus 12 months on our workmanship. We register the manufacturer warranty the same day rather than leaving it to you.

Question 8

Do you flush the system before fitting the new boiler?

Accepted Answer

Always. Fitting a new boiler onto a system full of old sludge is how you void a warranty and kill a heat exchanger early. A full flush before commissioning is part of every replacement we do, not an optional extra.

Question 9

What happens to my old boiler?

Accepted Answer

We take it away and dispose of it responsibly as part of the job. You're not left with it sitting in the garden waiting for a uplift.

Question 10

Do you handle building control notification?

Accepted Answer

Yes, that's on us. Every boiler replacement is notified as part of the job and you get the certificate for your records, which matters when you come to sell.

Question 11

Can you replace a back boiler behind the fireplace?

Accepted Answer

Yes, and it's a job we still see regularly in older Glasgow properties. It's a bigger piece of work than a combi swap since the fireplace usually needs opening up and the system reworking, so we'll survey it properly and be clear about the cost and the disruption before you commit.

Question 12

Will I be without heating and hot water while you work?

Accepted Answer

For most of the install day, yes, that's unavoidable. We aim to have heating and hot water back on by the evening on a one-day job. On a two-day job we'll tell you upfront which night you'll be without it so you can plan.

Question 13

Do you fit smart controls at the same time?

Accepted Answer

If you want them, yes, and replacement day is the sensible time to do it since the wiring is already being touched. We'll be honest about whether they'll genuinely save you money in your specific property rather than selling them as standard.

Question 14

Can I supply my own boiler and just pay you to fit it?

Accepted Answer

We'd rather supply it ourselves, mainly because the manufacturer warranty and our own workmanship guarantee get complicated when the appliance came from somewhere else. If you've already bought one, call and we'll talk it through honestly rather than refusing outright.

Question 15

How is this different from your boiler installation page?

Accepted Answer

Practically, they overlap heavily. Replacement means there's an existing boiler coming out, which is most jobs. Installation covers a property getting a boiler where there wasn't one, or a full system change. Same team, same standards, call either way.

Question 16

How long should a new boiler last?

Accepted Answer

Twelve to fifteen years is a fair expectation for a decent unit that gets serviced annually. Skipping services is the single most reliable way to cut that short, both because faults go unnoticed and because most manufacturer warranties require a service record to stay valid.

Question 17

Do I need my radiators replaced at the same time?

Accepted Answer

Usually not. Radiators tend to outlast boilers comfortably, and a system flush deals with most of what ails them. Where we do raise it is if a rad is visibly corroding or was undersized for the room to begin with, and we'll say so plainly rather than adding them to every quote as a matter of course.

Question 18

I'm a landlord replacing a boiler in a let flat, anything different?

Accepted Answer

The work itself is the same, but we'll coordinate access with your tenant directly and get the paperwork, building control certificate, warranty registration and a fresh CP12 if it's due, sent straight to you rather than left in the property.

Question 19

Would a bigger combi fix two showers running at once?

Accepted Answer

Only partly. A higher output combi heats water faster, so the temperature holds up better, but it cannot deliver more water than the main brings in. In a 1930s Bearsden house still on its original supply pipe, the flow can be the limit, and then a bigger combi gives you hotter water at the same weak flow. That is why the flow is measured before anyone talks about boiler size. Call 07988 591331.

Question 20

What happens to the tanks in the loft if we change the hot water?

Accepted Answer

If you move to a combi or to an unvented cylinder, the cold water tank in the loft is no longer needed and usually comes out on the day, along with any small heating tank beside it once the system is sealed. Taking them out also removes an old tank that could one day leak into a bedroom ceiling. If you keep a vented cylinder, the tank stays, and we check its condition and its lid. Call 07988 591331.

Question 21

The shower in our loft conversion is weak but the one downstairs is fine, will a new boiler help?

Accepted Answer

Not on its own. On a vented cylinder, the water is pushed through the shower by the height of the tank in the loft above it. A shower in a loft conversion sits almost level with that tank, so there is very little height to push with. That is a gravity problem, not a boiler one. An unvented cylinder or a combi fixes it, a pump can help on a vented system, and a new boiler alone changes nothing. Call 07988 591331.

Boiler Replacement in Bearsden

About Bearsden

Property Types We Work On in Bearsden

What We Do in Bearsden

Emergency Callouts

Boilers

Drains

Heating

Common Problems in Bearsden

Two showers that will not run together

A water main that cannot carry the plan

An en suite added after the hot water was sized

Pricing in Bearsden

Keep the Cylinder, or Go Combi?

What Locals Say About Mo

Nearby Areas We Cover

Bearsden Questions

Time For A New Boiler? Let's Size It Properly.